Understanding LDACS2 Frame Structure for Aeronautical Communication
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This page explains the LDACS2 frame structure used for communication between Aircraft Stations (ASs) and Ground Stations (GSs). LDACS2 is an aeronautical communication system operating in the L band and utilizes a Time Division Duplex (TDD) structure.
LDACS2 frame structure
The figure above illustrates the TDD LDACS2 frame structure. A frame consists of UP1, UP2, CoS1, CoS2, and LoG2.
- UP1 and UP2: These are dedicated exclusively for Ground Station transmissions.
- CoS1 and CoS2: These are dedicated exclusively for mobile Aircraft Transmissions.
- LoG2: This is used for channel entry purposes.
- CoS1: This is used to carry RTS (Request to Send), ACK (Acknowledgement), or Keep-Alive type frames.
- CoS2: (Content about CoS2 seems incomplete in the original article. Further clarification needed.)